Put Petrol in a Diesel Car in New Addington? Don't Start It
With that tank still holding the petrol and the motor not yet run, almost every job needs only a drain, so keep the engine off. That result is settled in the minutes immediately after the fill-up, rather than by the amount that was put in. Throughout New Addington and the rest of Greater London, Petrol in Diesel drains the vehicle and flushes it where it is, whether by a roadside, on a driveway or at a forecourt. Our technicians can explain what the following stage is. Phone — it happens ahead of anything else.
Petrol in a diesel: what to do now
- Give a petrol motor diesel and it will normally not run at all, and so the motorist stops there and so does the harm. Give a diesel petrol and the thing starts, it ticks over, it drives off — all right for several miles. People have that backwards, which is the bit they get wrong about petrol in a diesel especially. So never start it. And once started, don't rely on it: your fuel system is wearing down while you drive.
- Two jobs, diesel: it burns, and on the way through it keeps the high-pressure pump and injectors oiled. Petrol only does the one. That is why your ignition stays off too — turn it on and you often prime the system, and that's petrol exiting the tank for exactly those components.
- Never pour diesel on top to thin it. A diesel fuel system doesn't cope with petrol by percentage as that guidance suggests, and topping up takes out nothing — it merely hands you a bigger tank of the same blend. The grade makes no difference either: super unleaded is just petrol.
- Stay still if it's safe to. Hazards on, engine off, leave the vehicle. Wherever you have stopped — the verge on Central Parade, anywhere — a tricky place for us beats a started diesel, and nothing is simpler for us to deal with than a motor that never shifted.
- Before you dial, have your whereabouts. Anything next to you with a label on it, plus a postcode beginning CR0 0 — that's what settles whether the van turns up or circles.
- Phone 0333 366 0103. Tell us what went in, roughly how many litres, and also whether the car has run. Those three facts decide the entire visit.
Petrol in a diesel Renault Megane, sat outside Hayes (Kent) since breakfast? The afternoon has lost you nothing — fuel in a tank is inert. It was the run in that sucked thinned diesel through your pump. Phone before you drive the vehicle.
How far, and how hard? The second of those matters more than the first, so have both ready. The Mercedes C-Class will have felt completely ordinary on the way back from Rowdown Primary School — they all do, and that is the trap. Diesel into a petrol motor usually will not run at all: the driver stops, and so does the harm. Petrol into a diesel fires up, ticks over, moves off like nothing happened, whilst the high-pressure fuel pump gets on with its work minus the protection the fuel should be giving it. No warning appears, because behind the wheel nothing appears wrong.
Never risk it. The journey home from Man on the Moon is quite possible, which is precisely the issue — a weakened tank doesn't stop a diesel starting or pulling away, it just wears the components your fuel is meant to lubricate. Ring us, then let the Dacia Duster stay where it is.
Authorisation first, where there's a hire firm or a company behind your car — some contracts demand it, and settling that beforehand saves a great deal of time later. After that, phone us about the diesel Peugeot 208 near St Edward. You'll not know how full your tank was. Barely anyone does, two days into a vehicle, and it gets worked out on the spot all the same. Our technicians ask since the damage petrol does in a diesel is proportional: a couple of litres in an almost empty tank make a much stronger blend than the same few in a full one, and since petrol is engineered to resist igniting under pressure, which is precisely what a diesel relies on, the stronger it gets the more your engine rattles and smokes and flattens off.
By now the tank is the least of it. Run a diesel and the mix goes into your filter, into the lines, into your pump, into its rail — and none of that leaves with your tank contents. A diesel Citroen C4 that got by St Edwards Church Hall wants its circuit flushed. Clearing isn't the same thing.
Can petrol be taken from a diesel on the forecourt?
Most of this work starts at the pump, which means a fair part of that gets completed at one. The drain usually takes place there and then. Still on the forecourt at Shell? Given the site's permission, that is somewhere our technicians work, and regularly.
A forecourt is the one spot this is halted before your engine has run. Our technicians can still sort it out where it sits, even away from the pumps. In a car park, on a private drive or in a lay-by, the car has been fired up and driven there, and that sucked fuel through your filter then into the high-pressure fuel pump, right from your tank. None of that is a disaster, though the flush then has to reach past that tank to the lines and the fuel filter, and the few seconds between reading the receipt and going for the keys are what determine that.
Clear of the pump, the next driver can get by — so yes, let the attendants help you push it. Well worth it. Firing the car just for four vehicle lengths? Don't.
Coverage near New Addington
Being a residential suburb, New Addington gets a routine visit, while the places round about come along on that same run: Fickleshole and Farleigh Court, Forestdale and Addington, Farleigh.
If yours is not on that list it doesn't mean we never come — there are pages for most towns across Greater London, and the ones named above are merely the nearest neighbours. Close to the boundary, or somewhere the satnav can't find? Ring us and enquire instead of presuming.
Use the map for the area covered here. The vehicle doesn't need to travel to us. Our technicians work throughout every bit of that — kerbside, forecourts, driveways, car parks.
Stranded at the kerb anywhere in New Addington?
Not everybody gets the opportunity to pull in anywhere suitable. A routine call for us and not an unusual one: worked out after setting off, ended up along the verge on Salcot Crescent or in a lay-by with your hazards flashing.
Remain beside your car while it's sensible to sit inside, and clear of it if it's not. Don't start it up to get to a safer location. It will go — a diesel on petrol generally obliges — and each mile of obliging pulls that blend deeper into the system. Pressing on does the car far more harm than a technician driving out to an inconvenient location, and that is no bother for us.
Already driven it? Petrol in a diesel over a couple of miles
Your M25 is the one which matters now, and it sits under 5 miles from New Addington. A misfilled diesel will often take you onto it and some way along before anything feels wrong, and the signs when they appear are normally a drop in power, a rough idle and some smoke rather than a neat stop.
Take the first exit that's safe, stop there, and don't start the car to move it. It affects what our technicians bring, and so say so when you ring: on a longer drive — anything approaching the under 15 miles to the closest city — take it the mixture has been through the filter, your pump and the injectors.
Where is New Addington?
New Addington is a suburban area in south London, situated approximately 12.6 miles from central London and near the North Downs. New Addington has a mix of housing types, but semi-detached homes are predominant in the area. New Addington is close to several other local places, including Fickleshole, Farleigh Court, and Forestdale, and it sits at an elevation of around 152 metres. New Addington is a relatively small community with a population of around 7405 people.
The visit in New Addington, step by step
- Our technicians ask first, price after. What went in? How much? Has your engine run? Those responses shape what the work really is.
- The tainted mixture is drawn from the tank.
- Fuel lines are cleaned through and the filter cleared, leaving nothing in the system that started any of this.
- Clean diesel goes in, and then the system gets primed.
- Our engineers fire it up and check it runs properly on clean diesel.
That has your car ready to drive away. There is no need for a garage at any stage, since the work is all done where the vehicle is, and when it is caught quickly, lasting damage is very rare.
A different job: AdBlue in a diesel tank in New Addington
AdBlue instead of petrol? Then the first rule is unchanged — the engine stays off — while this fault beneath it's a different one altogether. Thinned diesel, and no protection left for your fuel system that relies on it. That is petrol. AdBlue is urea dissolved in water, and in a diesel tank it brings rust and residue in its place.
We deal with both, and AdBlue removal around New Addington has its own page with the detail — including why it's often the more serious of the two.
What a petrol-in-diesel fuel drain costs around New Addington
One price wouldn't be fair here, as this is not one job. These are the things that change it:
- This is the key one: whether your motor has been run, or driven.
- How much of the wrong fuel was put in, set against how much your tank can hold.
- The sort of liquid in the tank, petrol or AdBlue.
- Where is it? And can a van reach it and work there safely?
The car, the amount, whether it has run — give us those and the answer comes back straight instead of as a range. Not time-critical, with the vehicle at home and going nowhere? Then is fine.
New Addington motorists ask us these about petrol in diesel
Fuel drains on a New Addington petrol station forecourt
Yes — forecourts are where a fair share of this happens. Our engineers attend Esso and the other forecourts locally regularly, with the owner's consent — tell us which one you're at when you call and we will tell you if we can work there.
How much petrol in a diesel is too much?
It rests on the ratio instead of the litres, and a lot more on whether the engine has run. What settles how much work is required is whether that mixture has been drawn through the fuel system — because although five litres in an almost empty tank is a distinct situation from five in a full one, either way that's the question.
Petrol in my diesel, and I have driven it
Stop somewhere safe, switch off, then keep the vehicle off. Not restarting it is the single most valuable thing available to you now. Driving does move the issue out of the tank and into your pump and injectors, yes, and it stays recoverable much more frequently than motorists assume.
Will a fuel drain void my warranty?
A drain and flush carried out properly isn't a modification and doesn't invalidate a manufacturer's warranty. What is likelier to start an argument is a diesel that has been run on petrol. One more good reason for the motor to stay off.
Can I just add two-stroke oil and drive home?
No. Two-stroke oil is an old remedy for a distinct issue and it doesn't put back what petrol has diluted. Petrol remains in that tank after that, whatever else goes in, and the pump gets no break from it.
Main dealers and petrol in a diesel
Not at all. Our technicians drain and flush the vehicle wherever it is, so there's no need to take it to a dealership.
Still with your vehicle?
Switched off is how it stays.
Already driven it? Then pull over somewhere sensible, switch off, then let the vehicle stay that way. This is recoverable from a lot more often than motorists assume, and a still, cold motor is the best position to be in.
Across Greater London and in New Addington: on-site fuel draining, at home or on the forecourt or at the kerbside.